I saw this a couple hours ago at sunset. We were shooting guns on the Utah/Arizona state line, just getting ready to leave when something caught my eye while looking up at a passing airliner. At first I thought it was a planet but looked to big and bright. We watched for several minutes with binoculars when we decided to race home and get the telescope set up. We only viewed for another 10 minutes before it finally went dark. I attached a frame from a video I shot looking through the telescope showing the blinking lights. It was hardly moving any, if at all. If it really was at 60-65k feet… the thing must have been huge!